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Apparatus for determining dot mark position in image terminal device, system and method thereof

A technology for terminal equipment and determining devices, which is applied in measuring devices, image data processing, maps/plans/charts, etc., can solve the problems of overlap between labels, label defects, and low labeling efficiency, so as to meet the requirements of a large number of concurrent applications of users and reduce the Effect of Service Processing Overhead

Inactive Publication Date: 2003-12-03
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But simply calling the point labeling results in the server, when the scale is changed, there will be overlapping between labels, low labeling efficiency, and labeling defects, etc.

Method used

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  • Apparatus for determining dot mark position in image terminal device, system and method thereof
  • Apparatus for determining dot mark position in image terminal device, system and method thereof
  • Apparatus for determining dot mark position in image terminal device, system and method thereof

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Embodiment Construction

[0060] In the following embodiments, the server is used as a point to mark the position determination device.

[0061] The point labeling problem is first described with mathematical symbols.

[0062] Set the size of the label window R to be W×H. p = {p 1 ,p 2 ,...,p n} is the set of two-dimensional space points to be marked. p i The coordinates are (x i ,y i ), and satisfy 0≤x i ≤W, 0≤y i ≤H. Assume that for each point p i There are four candidate label positions (1, 2, 3, 4). C i is p i The set of candidate label positions, where C is uniformly taken i =C={1, 2, 3, 4}, that is, use 4 axisymmetric rectangles to mark the position, such as Figure 8 As shown, the four label positions of a point have different priorities from aesthetic considerations, Figure 8 Smaller numbers have higher priority. These four rectangles are denoted as r i (1) , r i (2) , r i (3) , r i (4) , point p i The label rectangle r i size is w i × h i . If the conditions are ...

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Abstract

The device, terminal, system and method for determining the position of dot marker in map (or picture) are suitable for the picture-browsing service based on session mode. At first, a static dot marker determining method based on rules is used to obtain the initial result under some proportional scale. When a user is browsing on a picture and applies for service, an incremental marker determiningmethod is used to complete the user request. Its advantage is very low overhead of service processing.

Description

technical field [0001] The present invention relates to a device, terminal equipment, system and method for determining point labeling positions in a graph, and in particular to a device, terminal device, system and method for determining point labeling positions of graphs in a network geographic information system. Background technique [0002] Labeling points on a map is a traditional research topic. For example, labeling points on a map is a classic problem in cartography and a key issue in geographic information systems. The so-called labeling of points on the map is an example of simple map labeling. For example, all cities on the Chinese map are marked with their city names, which is their labeling. figure 1 Given a map of an area near Beijing, the points in the map have been marked. However, the labeling method used in this picture does not conform to the optimal labeling point of view: the point of Xisanqi in the upper left corner of the picture is no longer in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/00G06T17/05G06T17/40G09B29/00G09B29/10G09G5/00
CPCG06T19/00G06T17/05G01C21/00G09B29/106G06T2219/004G01C21/3673
Inventor 陈滢于秀兰饶芳艳
Owner IBM CORP